With a bit of careful positioning I can get four kegs in the fridge. I've also put the TC-10's temp probe in a bottle of water to get a more stable tempreature reading.
There's not much room to play with!
The gas lines where kinking when pushed up to the top of the fridge so I added a 3/8ths straight connector just after the disco to add a bit of rigidity which seems to work. 
Now I just need to get round to using the blackboard paint and make a chalkboard to go behind the taps.
Cheers,
Jamie